{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["cause effect", "content container", "message topic", "component whole"], "input": "coquina is a poorly consolidated limestone composed of pieces of coral or shells ."}
{"cause effect": [], "content container": [], "message topic": [], "component whole": [{"subject": "limestone", "object": "pieces"}]}